多路电视信号自动循环监视电路

Multiple TV Signal Automatic Cycle Monitor Circuit

本文用场同步脉冲作基本定时单元，用计数器构成定时器，用多路转换器作切换开关设计出视频多路电视信号自动监视电路，并分析了电路的工作原理和使用方法。

This paper think out a sort of circuit which use vertical synchonization impulse asbasic time cell,use counter as timer,use multiple switchover as switch to monitor automaticallyvideo signals and analysed it's principle.